For the following questions answer them individually
Richa starts walking from her home and walks 50 m towards west and then turns left and walks 90 m. Then she again turns left and walks 30 m. After that she again turns left and goes 120 m. She finally turns right and and walks 20 m and reaches her final destination. How far is she from her home now and in which direction with reference to her home?
The two given expressions on either side of the ‘=’ sign will have the same value if two numbers on either side or on the same side are interchanged. Find from the given option the correct numbers to be interchanged.
$$4 + 6 \times 2 - 27 \div 3 = 8 \times 2 - 4 + 9 \div 3$$